YARN: Opportunistic Container :: Distributed YARN Job has Failed when tried adding flag -promote_opportunistic_after_start

Preconditions:

1. Secure Hadoop 3.1.1 - 3 Nodes cluster is installed
2. Set the below parameters  in RM yarn-site.xml ::<property>
   <name>yarn.resourcemanager.opportunistic-container-allocation.enabled</name>
   <value>true</value>
   </property>
3. Set this in NM[s]yarn-site.xml ::: <property>
   <name>yarn.nodemanager.opportunistic-containers-max-queue-length</name>
   <value>30</value>
   </property>

 
Test Steps:

Job Command : :

Job Command :: Job Command : : yarn org.apache.hadoop.yarn.applications.distributedshell.Client jar HDFS/hadoop/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-3.1.1*.jar -shell_command sleep -shell_args 20 -num_containers 20 -container_type OPPORTUNISTIC -promote_opportunistic_after_start

Actual Result: Distributed Shell Yarn Job Failed almost all times with below Diagnostics message

[ Failed Reason : Application Failure: desired = 10, completed = 10, allocated = 10, failed = 2, diagnostics = [2021-02-10 00:00:27.640]Container Killed to make room for Guaranteed Container.]

Expected Result: DS job should be successful with argument "promote_opportunistic_after_start"  *  *